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S-5843A Dataheets PDF



Part Number S-5843A
Manufacturers Seiko Instruments
Logo Seiko Instruments
Description TEMPERATURE SWITCH IC
Datasheet S-5843A DatasheetS-5843A Datasheet (PDF)

S-5843A Series www.sii-ic.com © Seiko Instruments Inc., 2009-2015 TEMPERATURE SWITCH IC (THERMOSTAT IC) Rev.2.2_00 The S-5843A Series is a temperature switch IC (thermostat IC) which detects the temperature with a temperature accuracy of ±2.5°C. The output inverts when temperature reaches the detection temperature. The S-5843A Series restores the output voltage when the temperature drops to the level of release temperature. The S-5843A Series operates at the lower power supply voltage of 1.65.

  S-5843A   S-5843A



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S-5843A Series www.sii-ic.com © Seiko Instruments Inc., 2009-2015 TEMPERATURE SWITCH IC (THERMOSTAT IC) Rev.2.2_00 The S-5843A Series is a temperature switch IC (thermostat IC) which detects the temperature with a temperature accuracy of ±2.5°C. The output inverts when temperature reaches the detection temperature. The S-5843A Series restores the output voltage when the temperature drops to the level of release temperature. The S-5843A Series operates at the lower power supply voltage of 1.65 V and its current consumption is 4.5 μA typ. due to CMOS configuration. A temperature sensor with the negative temperature coefficient, a reference voltage generation circuit, a comparator and a delay circuit are integrated on one chip, and enclosed into the packages SOT-23-5 and SNT-6A.  Features • Detection temperature: TDET = +40°C to +120°C, +1°C step, detection accuracy: ±2.5°C • Low voltage operation: VDD = 1.65 V min. • Low current consumption: IDD = 4.5 μA typ. (Ta = +25°C) • Hysteresis temperature: selectable in 2°C, 4°C, 10°C or 20°C • Selectable output logic in active "H" or "L" • Selectable output form in CMOS or Nch open drain • Prevent functions for false detection operation and false release operation • Operation temperature range: • Lead-free, Sn 100%, halogen-free*1 Ta = −40°C to +125°C *1. Refer to " Product Name Structure" for details.  Applications • Fan control • Air conditioning system • Mobile phone • Game console • Various electronic devices  Packages • SOT-23-5 • SNT-6A Seiko Instruments Inc. 1 TEMPERATURE SWITCH IC (THERMOSTAT IC) S-5843A Series  Block Diagrams 1. CMOS output product VDD Temperature sensor + − Delay circuit Logic circuit (selectable) Reference voltage generation circuit VSS 2. Nch open drain output product VDD Figure 1 RT Temperature sensor + − Delay circuit Logic circuit (selectable) Reference voltage generation circuit VSS Figure 2 RT 2 Seiko Instruments Inc. Rev.2.2_00 DET DET Rev.2.2_00 TEMPERATURE SWITCH IC (THERMOSTAT IC) S-5843A Series  Product Name Structure Users are able to select the detection temperature, output form and logic, hysteresis temperature and package for the S-5843A Series. 1. Product name 1. 1 SOT-23-5 S-5843A xx x x - M5T1 x Environmental code U: Lead-free (Sn 100%), halogen-free S: Lead-free, halogen-free Package abbreviation and IC packing specifications*1 M5T1: SOT-23-5, Tape Hysteresis temperature*2 A: 2°C B: 4°C C: 10°C D: 20°C Output form and output logic*3 A: CMOS output, active "H" B: CMOS output, active "L" C: Nch open drain output, active "H" D: Nch open drain output, active "L" Detection temperature (TDET)*4 40 to 99, A0 to A9, B0 to B9, C0 1. 2 SNT-6A S-5843A xx x x - I6T1 U Environmental code U: Lead-free (Sn 100%), halogen-free Package abbreviation and IC packing specifications*1 I6T1: SNT-6A, Tape Hysteresis temperature*2 A: 2°C B: 4°C C: 10°C D: 20°C Output form and output logic*3 A: CMOS output, active "H" B: CMOS output, a.


74AVCH20T245 S-5843A S-24C128C


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